完善页面8

pages/mall/admin/marketing/newcomer/index.uvue

@@ -125,13 +125,19 @@ const formData = reactive({
 const showCouponModal = ref(false)
 const isEditing = ref(false)
 const editingIndex = ref(-1)
-const editingCoupon = reactive<Coupon>({ id: 0, name: '', desc: '' })
 
-const couponOptions = reactive<Coupon[]>([
+// 使用 reactive 并显式指定初始对象，后续通过类型断言或接口约束保证类型安全
+const editingCoupon = reactive({
+	id: 0,
+	name: '',
+	desc: ''
+}) as Coupon
+
+const couponOptions = reactive([
 	{ id: 1, name: '满100减10元券', desc: '全场通用' },
 	{ id: 2, name: '新人5元无门槛', desc: '仅限新人使用' },
 	{ id: 3, name: '满200减50元券', desc: '限特定商品' }
-])
+] as Coupon[])
 
 function isSelected(item: Coupon): boolean {
 	return formData.coupons.some(c => c.id === item.id)